CN103970340B - Display device including touch electrode - Google Patents
Display device including touch electrode Download PDFInfo
- Publication number
- CN103970340B CN103970340B CN201310700480.8A CN201310700480A CN103970340B CN 103970340 B CN103970340 B CN 103970340B CN 201310700480 A CN201310700480 A CN 201310700480A CN 103970340 B CN103970340 B CN 103970340B
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- Prior art keywords
- touch
- sensing
- public electrode
- electrode
- display device
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
Abstract
The present invention relates to a kind of display device including touch electrode, and it improves touch sensitivity by reducing the parasitic capacitance between public electrode and gating/data wire and reducing the delay on touch-sensing and display driving, wherein, display device may include：Lower plate including pixel electrode；Upper plate including public electrode, wherein, for showing drive pattern, the public electrode forms the electric field for display image together with the pixel electrode, and is directed to touch-sensing pattern, and the electric capacity that the public electrode sensing touches according to user changes；And the liquid crystal layer of the VA types formed between the lower plate and the upper plate, it changes according to the electric field between the pixel electrode and the public electrode.
Description
Technical field
Embodiments of the present invention are related to the display device including touch electrode.
Background technology
Liquid crystal display（LCD）Device controls the light transmittance display image of liquid crystal by using electric field.Therefore, LCD device
It may include the liquid crystal board with the multiple pixels set with matrix formation, and for driving the driver of liquid crystal board.
Liquid crystal board may include the liquid crystal layer between infrabasal plate, upper substrate, upper substrate and infrabasal plate.According to whether apply electricity
, light light transmittance is controlled by the orientation of liquid crystal layer, so as to display image.
The LCD device of prior art typically uses input unit, such as mouse or keyboard.But in navigation, mobile phone
With, also extensively using touch-screen, touch-screen allows user while screen watch, by using finger, pen etc. directly in household electrical appliance
Ground connection touches screen to input information.
Hereinafter, the LCD device of prior art is described with reference to the accompanying drawings.
Fig. 1 is the sectional view for the LCD device with on-cell type of touch plates for schematically illustrating prior art.
As shown in figure 1, LCD device 10 includes touch pad 20, upper substrate 30, infrabasal plate 40 and liquid crystal layer 50.
Touch pad 20 may be configured to on-cell types to be attached to the upper surface of upper substrate 30.It is attached to upper substrate
30 plate upper surface, being touched for user is referred to as on-cell touch pads.
Although it is not shown, but upper substrate 30 may include colour filter, polarizer and cover-plate glass.
Infrabasal plate 400 may include the pixel and be included in opening in the pixel that select lines by intersecting and data wire limit
Close diode.
According to the orientation of the change control liquid crystal layer 500 of electric field, so as to control light transmission rate with display image.
But the LCD device 10 of the on-cell types with prior art has the following disadvantages.
First, extra touch pad 20 is provided with upper substrate 30, therefore increases the volume of LCD device 10.
Secondly as this touch pad 20 for additionally setting, it is difficult to realize slimming in LCD device 10.
Therefore, it is necessary to develop a kind of LCD device for the novel touch plate for having and can realizing slimming.
The content of the invention
Therefore, the present invention is intended to provide a kind of display device, its can substantially eliminate due to prior art limitation and
Shortcoming and caused by one or more problems.
The one side of embodiment of the present invention aims to provide a kind of display device, and it can be in VA（Vertical orientation）Pattern
In carry out sensing touch in the public electrode of upper substrate by using being formed.
The attendant advantages and feature of embodiment of the present invention will partly propose in subsequent specification, and its part
Ground is it will be evident that or can be from the reality for implementing the present invention when examining subsequent specification to those skilled in the art
Apply in mode and draw.
The purpose of embodiment of the present invention and other advantages can by the structure especially pointed out in the specification write,
The claim and accompanying drawing of the present invention is realized and obtained.
In order to realize these or other advantage and according to such as herein specifically and the purpose of the present invention that broadly describes,
A kind of display device is provided, the display device includes：Lower plate, it is included in select lines by intersecting and data wire limits
Pixel electrode in pixel region；Upper plate, it includes public electrode, wherein, for showing drive pattern, the public electrode and institute
State pixel electrode and form electric field together with display image, and be directed to touch-sensing pattern, public electrode sensing according to
The electric capacity that family touches changes；And the liquid crystal layer of the vertical orientation VA types formed between the upper plate and the lower plate, wherein,
The liquid crystal layer changes according to the electric field formed between the pixel electrode and the public electrode.
Now, the public electrode can include：Touch-sensing electrode（RX）, it passes through in a column direction to described public
Electrode is patterned and formed, and changes for sensing the electric capacity touched according to user；And touch driving electrodes（TX）, it passes through
The public electrode is patterned on column direction and line direction and formed, thus positioned at each touch-sensing electrode it
Between, and it is provided of the touch drive signal for sensing user's touch.
In addition, the display device can also include：Touch-sensing line, it is from the row side of the touch-sensing electrode
To one end extend；Drives line is touched, it extends in the end of the line direction of the upper plate along the column direction, institute
State and touch drives line for connecting the touch driving electrodes on the line direction；And touch drive, it is touched with described
Touch sense wire and be connected with drives line is touched, for the touch drive signal to be applied to the touch driving electrodes and from institute
State touch-sensing electrode and change to sense the electric capacity touched according to user.
In addition, the display device may also include：Touch-sensing line, its described column direction from the touch-sensing electrode
One end extension；Drives line is touched, it extends along the column direction from the touch driving electrodes, with the institute of the upper plate
Stating one end of column direction will set the touch driving electrodes with a line to connect along the line direction；Touch driving
Device, it is connected with the touch-sensing line and the touch drives line, for the touch drive signal to be applied to described
Touch driving electrodes and change from electric capacity described in the touch-sensing electrode senses.
In addition, the public electrode may also include multiple touch-sensing blocks for sensing user's touch, the multiple sense
Block is surveyed by being patterned the public electrode to be formed on the line direction and the column direction.
The upper plate may include：Shading light part, it is formed on the upper substrate, for preventing light leak；Colour filter, its shape
Into on the shading light part, for by being filtered from the incident light of the lower plate to show color；It is described public
Electrode, it is formed on the colour filter；First insulating barrier, it is formed on the public electrode；And touch wiring, its shape
Into on first insulating barrier and in the region overlapped with the shading light part.
The upper plate may include：Shading light part, it is formed on the upper substrate, for preventing light leak；Colour filter；Its shape
Into on the shading light part, for by being filtered from the incident light of the lower plate to show color；Touch wiring,
It is formed on the colour filter and in the region overlapped with the shading light part；First insulating barrier, it is formed described
Touch in wiring；And the public electrode, it is formed on first insulating barrier.
The upper plate may include：Shading light part, it is formed on the upper substrate, for preventing light leak；The common electrical
Pole, it is formed on the shading light part；Colour filter；It is formed on the public electrode, for by from the lower plate
Incident light is filtered to show color；First insulating barrier, it is formed on the colour filter；And touch wiring；Its
Formed on first insulating barrier and in the region overlapped with the shading light part.
Now, described one end for touching wiring drives electricity with the touch by being patterned to the public electrode to be formed
Any one in pole, touch-sensing electrode and touch-sensing block is connected, and the other end for touching wiring and touch
Driver is connected to sense user's touch.
In addition, the display device also includes timing controller, the timing controller is used for by time-division method to one
Individual frame is driven, with a frame period to on the display board display drive pattern of display image and
The touch-sensing pattern for sensing user's touch is alternately driven.
It should be appreciated that foregoing general description and the detailed description of subsequent embodiment of the present invention are exemplary reconciliation
The property released, it is intended to which invention offer claimed is explained further.
Brief description of the drawings
For providing a further understanding of the present invention and being combined and form being included for the part of the present invention
Accompanying drawing illustrates to embodiment of the present invention, and is used for explaining the purport of the present invention together with specification, wherein：
Fig. 1 is the sectional view for the LCD device with on-cell type of touch plates for schematically illustrating prior art；
Fig. 2 shows the display device according to first embodiment of the invention；
Fig. 3 is according to sectional view of the display device of first embodiment of the invention along A-A；
Fig. 4 shows the first example for including the upper plate in a display device in accordance with the invention；
Fig. 5 shows the second example for including the upper plate in a display device in accordance with the invention；
Fig. 6 shows the 3rd example for including the upper plate in a display device in accordance with the invention；
Fig. 7 shows the display device according to second embodiment of the invention；
Fig. 8 shows the display device according to third embodiment of the invention.
Embodiment
Hereinafter, it will be explained in detail with reference to the accompanying drawings and set according to the display including touch electrode of embodiment of the present invention
It is standby.
When explaining embodiment of the present invention, if referring to that the first element be located at the second element " go up or on ", it should be understood that
It can be in contact with each other for the first and second elements, or can be between the first and second elements inserted with third element.
According to the method for controlling liquid crystal layer distribution type, display device can have various patterns, for example, twisted-nematic（TN）
Pattern, vertical orientation（VA）Pattern, in-plane switching（IPS）Pattern, fringe field switching（FFS）Pattern etc..
Among above pattern, if IPS patterns and FFS mode, then pixel electrode（Pixel ITO）And public electrode
（Vcom）Both are formed on infrabasal plate, so that by the electric field between pixel electrode and public electrode come to being included in liquid crystal
Liquid crystal molecule in layer carries out orientation（align）.Therefore, IPS and FFS mode correspond to the side using in-plane switching type electric field
Method.
It can be applied to including the picture on infrabasal plate according to the display device including touch electrode of embodiment of the present invention
The liquid crystal display of public electrode on plain electrode and upper substrate（LCD）Device, in TN patterns as shown in VA patterns.
In addition, it can be applied to by common electrical according to the display device including touch electrode of embodiment of the present invention
Pole composition come sense user touch in-cell touch type LCD devices.
Below, it will describe the display device according to first embodiment of the invention.
Fig. 2 shows the display device according to first embodiment of the invention.
As shown in Fig. 2 it may include that timing controller 110, gating drive according to the display device of first embodiment of the invention
Dynamic device 120, data driver 130, touch drive 140, display board 150, touch driving electrodes 160 and touch-sensing electrode
170。
Timing controller 110 drives a frame period by time-division method so that is alternately driven within a frame period
Employ in the display drive pattern of display image on display board 150 and the touch-sensing pattern for sensing user's touch.
For showing drive pattern, timing controller 110 aligns（align）From outside provide vision signal, using frame as
The vision signal of alignment is converted into digital of digital video data by unit（R,G,B）, and by digital of digital video data（R,G,B）It is supplied to number
According to driver 130.
For showing drive pattern, timing controller 110 is by using the vertical synchronizing signal provided from outside
（Vsync）, horizontal-drive signal（Hsync）And clock signal（CLK）To generate the gating control for controlling gate driver 120
Signal processed（GCS）With the data controlling signal for control data driver 130（DCS）.
The gate control signal of generation（GCS）It is provided to gate driver 120, the data controlling signal of generation（DCS）
It is provided to data driver 130.
Data controlling signal（DCS）It may include that source starts pulse（SSP）, source sampling clock（SSC）, source output it is enabled
（SOE）And polarity control signal（POL）.
Gate control signal（GCS）It may include that gating starts pulse（GSP）, gating shift clock（GSC）Exported with gating
It is enabled（GOE）.
Timing controller 110 drives a frame period by time-division method so that is alternately driven within a frame period
Employ in the display drive pattern of the display image on display board 150（Hereinafter referred to as " display pattern, DM "）Used with for sensing
The touch-sensing pattern that family touches（Hereinafter referred to as " touch mode, TM "）.
Display pattern（DM）It is the pattern for showing desired image on display board 150, touch mode（TM）It is to be used for
Sense the pattern of the position touched on display board 150 by user.
Touch mode（TM）Hold time and compare display pattern（DM）Hold time it is relative short.That is, touch
Pattern（TM）In each display pattern（DM）Between by driving one short time period, thus do not interfere with display board 150 show
The picture quality of the image shown.According to one embodiment of the present invention, touch mode（TM）Hold time and about show mould
Formula（DM）Hold time 1/10,1/40 or less.
Gate driver 120 is connected and will be in display pattern（DM）The derailing switch that the select lines of lower display image is connected
Part.According to one embodiment of the present invention, gate driver 120 will gate high pressure from the reception signal of timer 110（VGH）
Select lines is applied to, so as to ON switch device.
When the switching device being connected with select lines is switched on, data driver 130 is to data wire output display data.
In this case, display data can be the gray value with the half-tone information for display image.
Touch drive 140 is connected with touch-sensing line and touch drives line.Touch drive 140 will touch driving letter
Number it is applied to and touches driving electrodes 160, and is touched according to the user from touch-sensing electrode 170 and changed come sense capacitance.
Below, it will display board 150 is described in detail in reference picture 3-6.
Fig. 3 is the sectional view along A-A according to the display device of first embodiment of the invention.
As shown in figure 3, display board 150 may include upper plate 200, lower plate 300 and liquid crystal layer 400.
According to one embodiment of the present invention, upper plate 200 may include upper substrate 210, the shading light part on upper substrate 210
220th, the colour filter 230 on shading light part 220, the public electrode 240 on colour filter 230, the first insulation on public electrode 240
The second insulating barrier 270 on contact layout 260 and contact layout 260 on the 250, first insulating barrier 250 of layer.
For display pattern（DM）, public electrode 240 forms electric field together with pixel electrode, so as to display image.For
Touch mode（TM）, public electrode 240 is according to the touch of user come sense capacitance change.
Public electrode 240 may include：Touch-sensing electrode 170（RX）, it is by a column direction to public electrode 240
Composition and formed, to the touch according to user come sense capacitance change；Touch driving electrodes 160（TX）, it be by
The composition of public electrode 240 is formed on column direction and line direction, between each touch-sensing electrode 170 and is applied in
Drive signal is touched to sense the touch of user.
Wiring 260 is touched to electrically connect with multiple touch driving electrodes 160 by the through hole on line direction.Touch driving electrodes
160 are provided at predetermined intervals and between driving electrodes 160 are touched inserted with the first insulating barrier 250.
The various examples of upper plate 200 are described hereinafter with reference to Fig. 4-6.
Fig. 4 shows the first example for including the upper plate in a display device in accordance with the invention.
Referring to Fig. 4, upper plate 200 may include upper substrate 210, shading light part 220, colour filter 230, public electrode 240, first
Insulating barrier 250, touch the insulating barrier 270 of wiring 260 and second.
Upper substrate 210 is by transparent material（Such as glass or plastics）It is made.
Shading light part 220 is located in the region corresponding with the border of colour filter 230, thus prevents in liquid crystal layer 400
In uncontrolled region light leak occurs for orientation.Shading light part 220 can be used as black matrix（BM）.
Colour filter 230 is formed on shading light part 220, wherein colour filter 230 to from the incident light of lower plate filtered from
And show color.
According to one embodiment of the present invention, colour filter 230 may include red, green and blue color filter.Formation is hiding
Colour filter 230 on light part 220 only transmits the light of particular range of wavelengths.
Public electrode 240 is formed on colour filter 230.For display pattern（DM）, public electrode 240 and pixel electrode one
Rise and form electric field, thus carry out display image.For contact mode（TM）, public electrode 240 senses electricity according to the touch of user
Hold and change.
First insulating barrier 250 is formed on public electrode 240, make it that public electrode 240 is electric each other with touching wiring 260
Insulation.
First insulating barrier 250 makes the surface planarisation of public electrode 240, and therefore strengthens viscous with public electrode 240
Connect intensity.
Touch wiring 260 to be formed on the first insulating barrier 250, more specifically, positioned at the region overlapped with shading light part 220
In.
Can be with some parts being patterned into predetermined areas of public electrode 240 as shown in figure 3, touching wiring 260
Electrical contact.
Wiring 260 is touched to can be used as touching drives line and touch-sensing line.That is, the one end for touching wiring 260 can
With by being connected to the composition of public electrode 240 and the touch driving electrodes formed, and touch wiring 260 the other end can with
It is connected in the touch drive that sensing user touches and is used as touching drives line.In addition, the one end for touching wiring 260 can be with leading to
The touch-sensing electrode for forming the composition of public electrode 240 is crossed to be connected, and touch wiring 260 the other end can with for feeling
The touch drive that user touches is surveyed to be connected and be used as touch-sensing line.
Second insulating barrier 270 is formed touches wiring 260 on wiring 260 is touched with protection.
Fig. 5 shows the second example for including the upper plate in a display device in accordance with the invention.
As shown in figure 5, upper plate 200 may include upper substrate 210, shading light part 220, colour filter 230, public electrode 240,
One insulating barrier 250, touch the insulating barrier 270 of wiring 260 and second.
Upper substrate 210 is by transparent material（Such as glass or plastics）It is made.
Shading light part 220 is located in the region corresponding with the border of colour filter 230, thus prevents in liquid crystal layer 400
In uncontrolled region light leak occurs for orientation.Shading light part 220 can be used as black matrix（BM）.
Colour filter 230 is formed on shading light part 220, wherein colour filter 230 to from the incident light of lower plate filtered from
And show color.
According to one embodiment of the present invention, colour filter 230 may include red, green and blue color filter.Formation is hiding
Colour filter 230 on light part 220 only transmits the light of particular range of wavelengths.
Touch wiring 260 to be formed on colour filter 230, more specifically, in the region overlapped with shading light part 220.
Can be with some parts electricity of the composition in predetermined areas of public electrode 240 as shown in figure 3, touching wiring 260
Contact.
Wiring 260 is touched to can be used as touching drives line and touch-sensing line.That is, the one end for touching wiring 260 can
With by being connected to the composition of public electrode 240 and the touch driving electrodes formed, and touch wiring 260 the other end can with
It is connected in the touch drive that sensing user touches and is used as touching drives line.In addition, the one end for touching wiring 260 can be with leading to
The touch-sensing electrode for forming the composition of public electrode 240 is crossed to be connected, and touch wiring 260 the other end can with for
The touch drive that sensing user touches is connected and is used as touch-sensing line.
First insulating barrier 250 is formed on wiring 260 is touched make it that public electrode 240 is electric each other with touching wiring 260
Insulation.
First insulating barrier 250 makes the surface planarisation of public electrode 240, and therefore strengthens viscous with public electrode 240
Connect intensity.
Public electrode 240 is formed on the first insulating barrier 250.For display pattern, public electrode 240 and pixel electrode one
Rise and form electric field with display image.For touch mode, public electrode 240 changes according to user's touch come sense capacitance.
Second insulating barrier 270 is formed on public electrode 240 to protect public electrode 240.
Fig. 6 shows the 3rd example for including the upper plate in a display device in accordance with the invention.
As shown in fig. 6, upper plate 200 may include upper substrate 210, shading light part 220, colour filter 230, public electrode 240,
One insulating barrier 250, touch the insulating barrier 270 of wiring 260 and second.
Upper substrate 210 is by transparent material（Such as glass or plastics）It is made.
Shading light part 220 is located in the region corresponding with the border of colour filter 230, so as to prevent in liquid crystal layer 400
In uncontrolled region light leak occurs for orientation.Shading light part 220 can be used as black matrix（BM）.
Public electrode 240 is formed on shading light part 220.For display pattern（DM）, public electrode 240 and pixel electrode
Electric field is formed together with display image.For touch mode（TM）, public electrode 240 changes according to user's touch come sense capacitance
Become.
Colour filter 230 is formed on public electrode 240, wherein colour filter 230 to from the incident light of lower plate filtered from
And show color.
According to one embodiment of the present invention, colour filter 230 may include red, green and blue color filter.Formed in public affairs
Colour filter 230 in common electrode 240 only transmits the light of particular range of wavelengths.
First insulating barrier 250 forms electric exhausted each other to cause public electrode 240 and touch wiring 260 on colour filter 230
Edge.First insulating barrier 250 can make surface flat.
Touch wiring 260 to be formed on the first insulating barrier 250, more specifically, positioned at the region overlapped with shading light part 220
In.
Can be with some parts electricity of the composition in predetermined areas of public electrode 240 as shown in figure 3, touching wiring 260
Contact.
Wiring 260 is touched to can be used as touching drives line and touch-sensing line.That is, the one end for touching wiring 260 can
With by being connected to the composition of public electrode 240 and the touch driving electrodes formed, and touch wiring 260 the other end can with
It is connected in the touch drive that sensing user touches and is used as touching drives line.In addition, the one end for touching wiring 260 can be with leading to
The touch-sensing electrode for forming the composition of public electrode 240 is crossed to be connected, and touch wiring 260 the other end can with for
The touch drive that sensing user touches is connected and is used as touch-sensing line.
Second insulating barrier 270 is formed touches wiring 260 on wiring 260 is touched with protection.
Referring again to Fig. 3, the multiple pixel regions for thering is a plurality of select lines and data wire by intersection to limit in lower plate 300
With pixel electrode of the formation in pixel region.
Although it is not shown, but there is the pel array for driving liquid crystal layer 400 in lower plate 300.
In lower plate 300, a plurality of select lines（GL）Formed and a plurality of data lines（DL）Vertically, so as to defining multiple pictures
Element.
According to one embodiment of the present invention, each pixel can be configured as including and red color filter, green color filter
Three sub-pixels corresponding with blue color filter（Red sub-pixel, green sub-pixels and blue subpixels）, wherein each height
Pixel may include thin film transistor (TFT)（TFT）, storage（Cst）And pixel electrode.
Thin film transistor (TFT)（TFT）It may include grid, active layer, insulating barrier and data electrode（Source/drain）.Now, it is thin
Film transistor（TFT）The bottom gate configuration that grid is located at below active layer can be configured as, or is configured as grid and is located at
The top gate structure of active layer.
Pixel electrode（Pixel ITO）Pass through default contact site（contact）With thin film transistor (TFT)（TFT）Source electrode be electrically connected
Connect, and data voltage is provided to sub-pixel according to vision signal（Pixel voltage）.
Liquid crystal layer 400 is formed between the upper and lower plates, wherein with vertical orientation（VA）The liquid crystal layer of driving passes through in picture
The electric field that is formed between plain electrode and public electrode and change.
Referring again to Fig. 2, by forming touch driving electrodes to the composition of public electrode 240 on column direction and line direction
160 so that touch driving electrodes 160 between each touch-sensing electrode 170, and apply to driving electrodes 160 are touched
For sensing the touch drive signal of user's touch.
Touch the touch driving electrodes 160 that drives line is connected on line direction, and one end of the line direction from upper plate 200
The touch drives line extended along column direction is connected with touch drive 140.
By forming touch-sensing electrode 170 to the composition of public electrode 240 in a column direction, so as to be touched according to user
Carry out sense capacitance change.
Touch-sensing line extends from one end of the column direction of touch-sensing electrode 170, and one end of touch-sensing line with
Touch drive 140 is connected.
Display device explained below according to second embodiment of the invention.
Fig. 7 shows the display device according to second embodiment of the invention.
As shown in fig. 7, timing controller 110 is included according to the display device of second embodiment of the invention, gating drives
Device 120, data driver 130, touch drive 140, display board 150, touch driving electrodes 160 and touch-sensing electrode 170.
Timing controller 110, gate driver 120, data driver 130, touch drive 140 and Fig. 2 shown in Fig. 7
Shown timing controller 110, gate driver 120, data driver 130, touch drive 140 are identical.Therefore, omission pair
In the detailed description of timing controller 110, gate driver 120, data driver 130 and touch drive 140.
Display board 150 has the upper plate shown in Fig. 4-6.Therefore, the detailed description to display board 150 is omitted.
By touching driving electrodes 160 to the composition of public electrode 240 to be formed on column direction and line direction so that touch
Driving electrodes 160 apply for sensing user between each touch-sensing electrode 170, and to driving electrodes 160 are touched
The touch drive signal of touch.
Touch drives line and extend from driving electrodes 160 are touched along column direction so that in the touch driving that same a line is set
One end of the column direction of the upper plate 200 of electrode 160 connects in the row direction.
That is, as illustrated in figure 7, four touch driving electrodes of same a line are arranged on（TX1）In upper plate
One end of 200 column direction（140 top in Fig. 7）Connected along line direction.In addition, it is arranged on four driving electricity of same a line
Pole（TX2）In one end of the column direction of upper plate 200（140 top in Fig. 7）Connected along line direction, and be arranged on same a line
Four driving electrodes（TX3）In one end of the column direction of upper plate 200（140 top in Fig. 7）Connected along line direction.
By forming touch-sensing electrode 170 to the composition of public electrode 240 in a column direction, so as to touching according to user
Touch and carry out sense capacitance change.
Touch-sensing line extends from one end of the column direction of touch-sensing electrode 170, and one end of touch-sensing line with
Touch drive 140 connects.
Display device described in detail below according to third embodiment of the invention.
Fig. 8 shows the display device according to third embodiment of the invention.
As shown in figure 8, it may include that timing controller 110, gating drive according to the display device of third embodiment of the invention
Dynamic device 120, data driver 130, touch drive 140, display board 150 and touch-sensing block 180.
Timing controller 110 drives a frame period by time-division method so that is used to show within a frame period
The display drive pattern of display image and the touch-sensing pattern for sensing user's touch are driven alternately on plate 150.
For showing drive pattern, the vision signal that timing controller 110 aligns from outside offer will be right in units of frame
Neat vision signal is converted into digital of digital video data（R,G,B）And by digital of digital video data（R,G,B）It is supplied to data driver
130。
For showing drive pattern, timing controller 110 is by using the vertical synchronizing signal provided from outside
（Vsync）, horizontal-drive signal（Hsync）And clock signal（CLK）To generate the gating control for controlling gate driver 120
Signal processed（GCS）With the data controlling signal for control data driver 130（DCS）.
Then, by the gate control signal of generation（GCS）Gate driver 120 is provided, and the data of generation are controlled
Signal（DCS）Data driver 130 is provided.
In this case, data controlling signal（DCS）It may include that source starts pulse（SSP）, source sampling clock（SSC）, source
Output is enabled（SOE）And polarity control signal（POL）.
Gate control signal（GCS）It may include that gating starts pulse（GSP）, gating shift clock（GSC）Exported with gating
It is enabled（GOE）.
Timing controller 110 drives a frame period by time-division method so that within a frame period, for showing
The display drive pattern of display image on plate 150（Hereinafter referred to as " display pattern, DM "）With the touch for sensing user's touch
Sensing modes（Hereinafter referred to as " touch mode ", TM）It is driven alternately.
Display pattern（DM）It is the pattern for showing desired image on display board 150, touch mode（TM）It is to be used for
The pattern for the position that sensing user touches on display board 150.
According to one embodiment of the present invention, if side parallel with select lines on display board 150 is upwardly formed " n " row
Touch-sensing block 180, then timing controller 110 repeats " n " secondary ground driven display pattern（DM）And touch mode（TM）
With the touch of the interior sensing user of sensing block 180 from all row during a frame.
That is, during a frame, driven in the touch-sensing block 180 that timing controller 110 is set on first row
Touch mode（TM1）And display pattern（DM1）, touch mode is driven in the touch-sensing block 180 set on secondary series（TM2）
And display pattern（DM2）,（n-1）Touch mode is driven in the touch-sensing block 180 set on row（TMn-1）With display mould
Formula（DMn-1）, and drive touch mode in the touch-sensing block 180 set on the n-th row（TMn）And display pattern（DMn）, from
And time-division method is controlled.
According to one embodiment of the present invention, for the XGA level TFT-LCD display devices with 768 select lines, gating
The TFT ON times of line are delicate not above 21, and when it is refreshed with 60 frames speed per second, and the time of a frame is
16.7 milliseconds.Therefore, touch mode（TM）And display pattern（DM）It is alternately to repeat in the cycle with 16.7 milliseconds.
Touch mode（TM）Hold time and compare display pattern（DM）Hold time it is relative short.That is, touch
Pattern（TM）In each display pattern（DM）Between by driving one short time period, thus do not interfere with display board 150 show
The picture quality of the image shown.According to one embodiment of the present invention, touch mode（TM）Hold time and about show mould
Formula（DM）1/10,1/40 or less to hold time.
Gate driver 120 is connected and shown for display pattern（DM）Image the derailing switch that is connected of select lines
Part.According to one embodiment of the present invention, gate driver 120 will gate high pressure from the reception signal of timing controller 110
（VGH）Select lines is applied to, so as to ON switch device.
When the switching device being connected with select lines is switched on, data driver 130 is to data wire output display data.
In this case, display data can be the gray value with the half-tone information for display image.
The touch drive 140 being connected with touching wiring is touched to sense according to the user from touch-sensing block 180
Electric capacity changes, and simultaneously sensing touch position is touched with the presence or absence of user so as to sense.
Display board 150 has the upper plate shown in Fig. 4-6.Therefore, the detailed description to display board 150 is omitted.
By forming touch-sensing block 180 to public electrode composition on column direction and line direction.
It is connected from the touch wiring 260 of one end extension of the column direction of touch-sensing block 180 with touch drive 140.
According to the present invention, the parasitism electricity between public electrode and select lines and between public electrode and data wire is reduced
Hold, due to the delay for reducing parasitic capacitance so as to reduce on touch-sensing and display driving, so as to improve touch-sensitive
Degree.
In addition, the touch for being connected to the public electrode 240 being patterned into active area, which connects up 260, is formed on upper substrate
In, so as to improve aperture ratio.
In addition, the touch wiring 260 of the public electrode 240 of composition is formed on the inside of upper substrate for connecting, make
The inclined-plane of plate side can be reduced by obtaining, it is achieved thereby that the slimming of display device.
Without departing from the spirit and scope of the present invention, various modifications and change can be carried out with embodiment of the present invention
Shape, this will be apparent to practitioners skilled in the art.Therefore, the present invention covers the modification and variation of the invention to being provided
And they are all in the claimed scope of claim and its equivalent.
The cross reference of related application
The korean patent application No.10-2013-0010383 submitted this application claims on January 30th, 2013 priority,
In which is incorporated herein by reference, as carried out abundant elaboration herein.
Claims (7)
1. a kind of display device, the display device includes：
Lower plate, it is included in the pixel electrode in the pixel region that the select lines by intersecting and data wire limit；
Upper plate, it includes public electrode, wherein, for showing drive pattern, the public electrode is together with the pixel electrode
Electric field is formed with display image, and is directed to touch-sensing pattern, the electric capacity that the public electrode sensing touches according to user changes
Become；And
The liquid crystal layer of the vertical orientation VA types formed between the upper plate and the lower plate, wherein, the liquid crystal layer is according to shape
Changed into the electric field between the pixel electrode and the public electrode,
Wherein, the public electrode includes：
Touch-sensing electrode (RX), it to the public electrode by being patterned to be formed, for sensing root in a column direction
The electric capacity touched according to user changes；And
Touch driving electrodes (TX), its by being patterned on column direction and line direction to the public electrode to be formed, because
This is provided of the touch drive signal for sensing user's touch between each touch-sensing electrode, and
And
Wherein, the upper plate includes：
Shading light part, it is formed on upper substrate, for preventing light leak；And
Wiring is touched, it is formed in the region overlapped with the shading light part in the upper plate, described to touch wiring connection
Between driving electrodes are touched.
2. display device according to claim 1, the display device also includes：
Touch-sensing line, it extends from one end of the column direction of the touch-sensing electrode；
Drives line is touched, it extends in the end of the line direction of the upper plate along the column direction, and described touch is driven
Moving-wire is used to connect the touch driving electrodes on the line direction；And
Touch drive, it is connected with the touch-sensing line and touch drives line, for the touch drive signal to be applied
The electric capacity for adding to the touch driving electrodes and being touched from the touch-sensing electrode senses according to user changes.
3. display device according to claim 1, the display device also includes：
Touch-sensing line, it extends from one end of the column direction of the touch-sensing electrode；
Drives line is touched, it extends along the column direction from the touch driving electrodes, with the row side of the upper plate
To one end will be connected along the line direction setting with the touch driving electrodes of a line；
Touch drive, it is connected with the touch-sensing line and the touch drives line, for touching driving letter by described
Number apply to the touch and driving electrodes and to change from electric capacity described in the touch-sensing electrode senses.
4. display device according to claim 1, wherein, the upper plate also includes：
Colour filter, it is formed on the shading light part, for by being filtered from the incident light of the lower plate to show
Go out color；And
First insulating barrier, it is formed on the public electrode,
Wherein, it is described to touch wiring formation on first insulating barrier, and
Wherein, the public electrode is formed on the colour filter.
5. display device according to claim 1, wherein, the upper plate also includes：
Colour filter, it is formed on the shading light part, for by being filtered from the incident light of the lower plate to show
Go out color；And
First insulating barrier, it is formed touches in wiring described,
Wherein, it is described to touch wiring formation on the colour filter, and
Wherein, the public electrode is formed on first insulating barrier.
6. display device according to claim 1, wherein, the upper plate also includes：
Colour filter, it is formed on the public electrode, for by being filtered from the incident light of the lower plate to show
Go out color；And
First insulating barrier, it is formed on the colour filter,
Wherein, it is described to touch wiring formation on first insulating barrier, and
Wherein, the public electrode is formed on the shading light part.
7. display device according to claim 1, the display device also includes timing controller, the timing controller
For being driven by time-division method to a frame, with a frame period to the institute for display image on the display panel
State display drive pattern and the touch-sensing pattern for sensing user's touch is alternately driven.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2013-0010383 | 2013-01-30 | ||
| KR1020130010383A KR102023436B1 (en) | 2013-01-30 | 2013-01-30 | Apparatus for display including touch electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103970340A CN103970340A (en) | 2014-08-06 |
| CN103970340B true CN103970340B (en) | 2017-12-01 |
Family
ID=51222394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310700480.8A Active CN103970340B (en) | 2013-01-30 | 2013-12-18 | Display device including touch electrode |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US9377913B2 (en) |
| KR (1) | KR102023436B1 (en) |
| CN (1) | CN103970340B (en) |
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Also Published As
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| US20140210774A1 (en) | 2014-07-31 |
| KR20140097816A (en) | 2014-08-07 |
| US10282043B2 (en) | 2019-05-07 |
| CN103970340A (en) | 2014-08-06 |
| KR102023436B1 (en) | 2019-09-20 |
| US9377913B2 (en) | 2016-06-28 |
| US20160274704A1 (en) | 2016-09-22 |
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